Either the information I posted two days ago got lost in translation or Samyang is preparing to announce another wide angle lens for mirrorless cameras. Either way, here are the detailed specifications for the Samyang 10mm f/2.8 lens:

Yes, like I said: something got lost in translation or they will release two lenses.

Dpablo unfiltered

What did you say?

http://photorumors.com/ PhotoRumors

Sebastian

Nice to see the optical schematics and the specs of the upcoming 10/2.8. Pretty heavy! That means good built, lots of glass, but more to drag around when hiking to wherever the sky is dark enough for the stars to be spectacular.
As for a 12/2.0 mirrorless, I would also assume sth got lost in translation. That lens would be hard to do in f/2.0 for APS-C, and not very competitive for m43.

fjfjjj

It looks like the forward aspheric (#5) is cemented to its neighbors. So how can its neighbors not be aspherics?

http://leicaapostate.com/ J Shin

I think the two “gaps” before and after the forward aspheric are air spaces; it then counts up to 14 elements.

Regardless, if the 10mm lens spec is also correct, that would be amazing for all the systems concerned.

http://genotypewritings.blogspot.com/ genotypewriter

Doesn’t CS mean it’s aps-c? At least for now?

Also if the same lens is available for dslr mounts, it’s not the greatest news because it won’t be small on CSCs.

Sebastian

Maybe I’m missing sth, but I think this is simply a cross-section of the 10/2.8 that has been delayed. It’s for DSLRs, so it can easily be modified to fit systems with shorter register, but, as is pointed out below, the inherent advantage of CSCs for short focal lengths is then wasted and the lens remains large.
As usual on these ultra-wides, no filter. 86 mm is the outer diameter.

http://leicaapostate.com/ J Shin

I’ve been slapping Leica R lenses on an E-M1, so I guess I don’t care about the size proportionality. We’ll see how the image quality holds up relative to price.

The apparent lack of filter thread does bother me.

Also, a lens tuned for APS will have lower absolute resolution than one tuned for µ43. But, a lens designed for APS won’t lose as much when used on µ43; crop factor between the formats is only 1.33x, and center performance is usually good on the Samyangs, and with retrofocus wides in general.

http://genotypewritings.blogspot.com/ genotypewriter

If you count the elements you can see the gaps arent greyed out. Likely a mistake.